Zak Peric, an instructor at Tower Hamlets College in London, put together an outstanding doodle project with his students. Over the course of three days, 11 students doodled on the wall of their college.

Using only black ink, students drew shapes, characters, objects, and lines all around the encouraging and positive words: "The difference between who you are and who you want to be is what you do!"

Kudos to Zak for making this happen! Long live teachers and instructors that encourage the arts beyond just the walls of their classroom. Watch it all come to life in the time-lapse video below.

Our first R-Rated wallpaper comes to us from Spaniard illustrator Amaia Arrazola. If you recall she was also our guest blogger for the month of February and killed it with 9 inspiring posts (read them here).

I'm a longtime fan of David Shillinglaw's art. It's impossible not to be. He's got great instinct when it comes to letters, layers, shapes and colors, and wait until you see what he can do on a concrete wall.

If you've never taken a marker or paint brush to a wall, get off your butt and make it happen this weekend. You must, if simply for the challenge when it comes to size and scale. It's by far my favorite canvas and no one does it better than David.

Jim Bradshaw is one of our favorite artists. His creatures are often fun, wacky and off-the-wall. In the fourth wallpaper from our series, he delivers a tapestry of convivial personalities over an explosion of red.

Krysthopher Woods often turns the ghastly and creepy into stunning and sublime. In the third wallpaper from our series, he seems to have drawn a creature enveloped by snow and tears during it's final journey.

Matt Williams (aka überkraaft) rocks red and black lines for our second drawn wallpaper in the series. Matt's been in the habit of doodling since the age of three and now resides in the U.K. as a freelance illustrator, designer and all-around creative.

This wallpaper looks amazing on my iPad. Download it today and you'll see what I mean.

Unless you've printed this website on some paper, you are no doubt reading this on some sort of digital device. Maybe it sits on your desk or lap, or maybe it's small enough to be held in one hand or two, no matter the case, you deserve a beautifully drawn background to greet you every time you turn it on.

That's where we come in. We as in Doodlers Anonymous and the artists who've been invited to share their art with you.

Our first wallpaper is hand-drawn by Guatemalan artist Muxxi. A long time friend of DA, Muxxi shares with us her surreal world and fantastical characters. Download it free and make it part of your everyday. If you’d like to be notified when the next one is released, sign up to our newsletter.